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1、Unit 6 TV programmes,Grammar,To learn to use if and unless,Learning Objectives,1. If you are a football fan, you will not want to miss this weeks programme.2. If you enjoy solving mysteries, you might like this film. However, if you get scared easily, do not watch it!3. If you are an animal-lover, y
2、ou may feel sad about it.,Presentation,1. _ you are a football fan, you will not want to miss this weeks programme.2. _ you enjoy solving mysteries, you might like this film. However, _ you get scared easily, do not watch it!3. _ you are an animal-lover, you may feel sad about it.,go,If,If,if,If,Rea
3、dy?,1. Diana (will go/go/goes) to Europe if she (will pass/pass/passes) the exams.2. The graduates (will teach/teach/teaches) in the poor village if the Ministry of Education (will agree/ agree/agrees) soon.3. If there (will be/ are/is) a car accident, they (will call/call/calls) 110 for help at onc
4、e.,Exercises,Warming up,We use if to talk about the result of a possible action.What TV programme will you watch if you finish your homework early tonight?If I finish my homework early tonight, I will watch the basketball match on TV.,if 可以用来引导条件状语从句，此时，if 通常表示“假如”。 if 引导的从句既可以放在主句之前也可以放在主句之后。当从句位于主
5、句之前时，常用逗号与主句隔开。,Using if,当一个句子中含有if 引导的条件状语从句时，主、从句的时态有如下情形：e.g. If it doesnt rain, I will go for a picnic.如果从句表示将来要发生的事情，从句通常用_，主句用_，即“主将从现”原则。,一般现在时,一般将来时,如果主句中含有will, may, can, might等情态动词时，从句通常用一般现在时。e.g. You can go _. 如果你想去可以去。,if you want,如果主句是祈使句，从句通常用一般现在时。e.g. Pleasecallmeifhecomesnext Sunda
6、y. 如果他下周日过来请打电话给我。 _ if _. 如果你不完成作业就不要玩电脑游戏。,you dont finish your homework,Dont play computer games,如果表示的是客观事实或普遍真理，从句和主句通常都用一般现在时。e.g. If you heat ice, it melts. 如果你加热冰，它就会融化。,【运用】根据汉语意思完成英语句子，每空一词(含缩略形式)。1. 如果明天我不忙，我就和你一起去购物。 If _ _ busy tomorrow, I _ _ _ with you.2. 如果你需要帮忙，请告诉我。 Please _ _ if yo
7、u _ _.,Im not will go shopping,tell me need help,3. 如果你不认识路，可以给我打电话。 You _ _ me if you _ _ the way.,can call dont know,What will happen if . ?Millie is thinking about herself, her friends and TV programmes. Help her choose the correct forms of the verbs in brackets to complete the sentences.,If I _
8、(go, will go) to the Reading Club this afternoon, I _ ( do not have, may not have) any time to watch TV.2. If Simon_(gets, will get) home too late, he _ (misses, will miss) his favourite cartoon.,go,may not have,gets,will miss,3. If Amy _(completes, will complete) all her homework quickly, she _ (wa
9、tches, will watch) the chat show.,completes,will watch,4. If Daniel _ (takes, will take) part in the game show, he _ (wins, might win) a prize.,takes,might win,5. If Sandy _(finds, will find) a programme interesting, she _ (introduces, will introduce) it to us.,finds,will introduce,Work out the rule
10、!We often use the simple _ (future, present) tense in the if-clause. We need a _ (comma, full stop) after the if-clause when it is the first part of a sentence.,comma,present,Asking about animalsMillie watched a documentary about animals. Help Millie answer her fathers questions with the help of the
11、 words in the box.,attack catch hunt live protect walk,vt./vi. 攻击，进攻,Dad: What will a bear do if its in danger?Millie: If a bear (1)_, it (2) _ people.Dad: What will a polar bear do if its hungry?Millie: If a polar bear (3)_, it (4)_ fish from the water.,n. 北极熊,is in danger,will attack,is hungry,wil
12、l catch,Dad: What will elephants do if theyre thirsty?Millie: If elephants (5)_, they (6)_ until they find a river.Dad: What will tigers do if they live in the wild?Millie: Tigers (7)_ for their own food if they(8) _.,will walk,live in the wild,are thirsty,will hunt,Dad: What will tigers do if they
13、have babies?Millie: Tigers (9)_ as a family if they (10)_.Dad: What will male wolves do if theres danger?Millie: Male wolves (11)_ their families if there (12)_.,will live,have babies,will protect,is danger,adj. 雄性的,1. Unless you take more care, youll have an accident.2. My baby sister never cries u
14、nless she is hungry.3. Dont promise anything unless youre 100 per cent sure.4. Youll fail in English unless you work hard.,Presentation,unless,unless,1. _ you take more care, youll have an accident.2. My baby sister never cries _ she is hungry.3. Dont promise anything _ youre 100 per cent sure.4. Yo
15、ull fail in English _ you work hard.,go,Unless,unless,Ready?,unless意为“如果不”，“除非”。牛奶如果不冷藏，很快就会变酸。Milk quickly turns sour unless its refrigerated.,Unless he comes soon, Im going without him.= If he doesnt come soon, Im going without him.他如果不马上来，我就自己走了。,Sometimes we can use ifnot to replace unless.,unle
16、ss作连词，意为“如果不，除非”，在句中引导条件状语从句，相当于if . not。与 if 一样，unless引导的条件状语从句常用一般现在时态表示将来。 unless 引导的从句既可以放在主句之前，也可以放在主句之后。当从句位于主句之前时，常用逗号与主句隔开。e.g. He wont come to the party unless you invite him.,Using unless,Sometimes we can use if . not to replace unless. 如果主句是一般将来时态，则unless 引导的从句的时态通常用一般现在时表将来。e.g. The situ
17、ation will continue unless humans stop hunting them for their fur and bones. The situation will continue if humans do not stop hunting them for their fur and bones.,e.g. Unless it rains tomorrow, we are going to play football in the park. If it does not rain tomorrow, we are going to play football i
18、n the park.,The unless-clause can come first or after the main clause.e.g. Unless you try your best, you will not realize your dream. You will be late unless you leave right now.,在unless引导的条件状语从句中，主句也可以含有情态动词或祈使句。e.g. He cannot see clearly unless he wears glasses. Dont touch the machine unless the t
19、eacher allows you to.,【运用】根据所讲内容将下面的句子翻译成英语。我不会和你去看电影，除非我妈妈允许我去。1. _ _,I wont go to the movies with you, unless my mother allows me to.,2. 除非露西邀请我，否则我不会去参加她的生 日聚会。 _ _ _3. 如果明天不下雨，学生们将去野餐。 _ _ _,I wont go to Lucys birthday party unless she invites me. / If Lucy doesnt invite me, I wont go to her bir
20、thday party.,Unless it rains tomorrow, the students will have a picnic. / If it doesnt rain tomorrow, the students will have a picnic.,A trip to a film and TV studioSandy has prepared some tips for a school trip to a film and TV studio. However, she tore the tips by accident. Help her put the tips b
21、ack together. Match the two parts of the sentences and write the correct letters in the blanks.,a unless you take your own food with you.b you will not need to take the minibus in the studio. c you will not have to take an umbrella with you.d unless the traffic is very heavy.e unless you have little
22、 interest in it.f you will travel around it with a tour guide.,Unless the weather report says it is going to rain, _ 2 We will arrive at the studio around 9:30 a.m. _,c you will not have to take an umbrella with you.d unless the traffic is very heavy.,c,d,Unless you already know the studio very well
23、, _4 You will buy your lunch at the restaurants in the studio _,a unless you take your own food with you.f you will travel around it with a tour guide.,f,a,5 Unless you are tired, _ You will have a chance to see how a TV programme is recorded _,b,e,b you will not need to take the minibus in the stud
24、io. e unless you have little interest in it.,Work out the rule!We use the simple _ (future, present) tense in the unless-clause.,present,单项选择。1. Ifthere_nobuyingandselling ofanimals,there_nokillingin nature. A.is;willbeB.willbe;willbe C.is;is D.willbe;is,Exercises,2. Imwaitingformyfriend._, Illgoshoppingalone. A.Ifshecomes B.Ifshewontcome C.Ifshedoesntcome,3. We are going to play basketball _ it rains. A. if not B. when C. except that D. unless,4. Eat less food _ you want to put on weight. A. if B. unless C. until D. as soon as,